/* Reset e configurações básicas */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 40px;
    max-width: 600px;
    width: 100%;
    position: relative;
    backdrop-filter: blur(10px);
}

/* Barra de progresso */
.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(102, 126, 234, 0.2);
    border-radius: 4px;
    margin-bottom: 40px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

/* Etapas */
.step {
    display: none;
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.step.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Títulos e textos */
h1 {
    color: #333;
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.question {
    color: #333;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 40px;
    line-height: 1.4;
}

/* Grupos de input */
.input-group {
    margin-bottom: 25px;
    text-align: left;
}

.input-group label {
    display: block;
    color: #555;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 1rem;
}

.input-group input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fff;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-group input::placeholder {
    color: #aaa;
}

/* Opções de resposta */
.options {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.option-btn {
    padding: 15px 40px;
    border: 3px solid #e1e5e9;
    border-radius: 12px;
    background: #fff;
    color: #555;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

.option-btn:hover {
    border-color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.2);
}

.option-btn.selected {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-color: #667eea;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

/* Botões de navegação */
.nav-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
}

.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: #f8f9fa;
    color: #555;
    border: 2px solid #e1e5e9;
}

.btn-secondary:hover {
    background: #e9ecef;
    transform: translateY(-2px);
}

/* Mensagem de conclusão */
.completion-message {
    text-align: center;
    padding: 40px 20px;
}

.completion-message h2 {
    color: #333;
    font-size: 2rem;
    margin-bottom: 20px;
}

.completion-message p {
    color: #666;
    font-size: 1.1rem;
    line-height: 1.6;
}

/* Mensagem de erro */
.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 15px 20px;
    border-radius: 8px;
    margin-top: 20px;
    border: 1px solid #f5c6cb;
}

/* Loading spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsividade */
@media (max-width: 768px) {
    .container {
        padding: 30px 20px;
        margin: 10px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .question {
        font-size: 1.3rem;
    }
    
    .options {
        flex-direction: column;
        align-items: center;
    }
    
    .option-btn {
        width: 100%;
        max-width: 200px;
    }
    
    .nav-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn {
        width: 100%;
        max-width: 200px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 20px 15px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .question {
        font-size: 1.2rem;
    }
    
    .input-group input {
        padding: 12px 15px;
    }
    
    .option-btn {
        padding: 12px 30px;
        font-size: 1rem;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 0.95rem;
    }
}